Bromine flame-retardant highly impact resistant polystyrene complex containing superfine sheet silicate and preparation thereof
A flame-retardant high-impact polystyrene and bromine silicate technology, which is applied in the field of high-impact polystyrene modification, can solve the problems of increasing the production cost of home appliance manufacturers and increasing the cost of bromine flame-retardant materials. Achieve the effect of optimizing the processing aid system, easy processing and molding, and good mechanical properties
Inactive Publication Date: 2009-01-28
SHANGHAI KINGFA SCI & TECH +1
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Problems solved by technology
Because HIPS is easy to burn, in order to achieve UL94 1.5mmV-0, the addition amount of bromine flame retardant is usually more than 12%, and the market price of bromine flame retardant is usually more than twice that of HIPS resin, such a high The amount of bromine flame retardants greatly increases the cost of bromine flame retardant materials, which directly increases the production cost of home appliance manufacturers, so looking for more efficient flame retardants and synergists is HIPS flame retardant resin modification manufacturers The main way to reduce costs
Method used
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[0015] The preparation method is as follows: after fully mixing high-impact polystyrene resin, flame retardant, flame retardant synergist, and antioxidant under high-speed stirring, melt, knead, extrude, cool, Drying, dicing and packaging. The temperature of each section of the screw barrel should be kept between 180°C and 240°C, the aspect ratio of the twin-screw extruder is 32-40, and the screw speed is 300-500 rpm.
[0016] In this experiment, HIPS with a butadiene rubber content of 3-10% was used, and brominated flame retardants were brominated triazine and decabromodiphenyl ether. Ultrafine layered silicate is ultrafine organic montmorillonite treated with alkylammonium salt.
[0017] The composites prepared in each embodiment were injection-molded into standard specimens for testing according to the standard size, and the physical properties in each embodiment were tested according to Chinese national standards and American UL standards, as shown in Table 1. The formul...
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Abstract
The invention discloses a bromine flame-retarding high impact-resistant polystyrene composite containing superfine layered silicate and a preparation method thereof. The composite comprises the components with the following portions: 75 to 87.6 percent of high impact-resistant polystyrene resin, 9 to 14 percent of bromine flame retarding agent, 3 to 7 percent of retardant synergist, 0.3 to 5 percent of superfine layered silicate and 0.1 to 1 percent of antioxidant, which are one-time extruded and processed by a double screw extruder. The composite of the invention keeps the good performance of HIPS resin, has high flame retarding grade, small amount of flame retarding agent, unchanged mechanical performance and processing performance, small environmental pollution and small human harm, can meet the strict requirements for environment protection internationally at present, simultaneously has the advantages of easy forming and good surface glossiness, and is suitable for making shells of various electrical appliances.
Description
technical field [0001] The invention relates to the technical field of modification of high-impact polystyrene, in particular to a bromine flame-retardant high-impact polystyrene compound containing ultrafine layered silicate and a preparation method thereof. Background technique [0002] Polystyrene (PS) was industrialized in 1930 by I.G Farben (predecessor of BASF) in Germany. As one of the five general-purpose plastics, it has the advantages of excellent formability, hard quality, transparency, rigidity, electrical insulation, low hygroscopicity, easy dyeing and low price. High-impact polystyrene (HIPS) is produced by adding a small amount of elastomer to PS, which overcomes the brittleness of polystyrene and is widely used in electronics, automobiles, home appliances, instruments, daily necessities, toys, etc. industry. However, HIPS is easy to burn, which limits its further promotion and use. Especially in light-colored home appliances such as monitors, video recorde...
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IPC IPC(8): C08L25/06C08K5/524B29C47/40B29B9/12C08K5/20C08K3/34C08K3/22C08K3/38C08K5/3492B29C48/40
CPCB29C48/40
Inventor 薄文海叶南飚王林郭建明
Owner SHANGHAI KINGFA SCI & TECH